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Alkyl phenol sulfonic polyoxyethylene ether sulfate and preparation thereof

A technology of alkylphenol sulfonic acid polyoxyethylene ether and sulfate ester salt, which is applied in the direction of sulfonic acid preparation, chemical instruments and methods, and drilling compositions, etc., which can solve the problems of poor oil displacement efficiency, high production cost, formation and Oil well damage and other problems, to achieve the effect of enhanced oil recovery

Active Publication Date: 2008-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems to be solved by the present invention is that the oil displacement agent containing surfactant in the prior art has poor oil displacement efficiency under high temperature and high salinity conditions, and at the same time, because it contains alkali, it will cause damage to the formation and oil well, and corrode equipment and pipelines , the problem of high production cost, a new polyoxyethylene ether sulfate of alkylphenolsulfonic acid is provided

Method used

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  • Alkyl phenol sulfonic polyoxyethylene ether sulfate and preparation thereof
  • Alkyl phenol sulfonic polyoxyethylene ether sulfate and preparation thereof
  • Alkyl phenol sulfonic polyoxyethylene ether sulfate and preparation thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] Synthesis of Nonylphenolsulfonic Acid Polyoxyethylene (5) Ether Sulfate Sodium

[0035] (1) Add 110 grams of nonylphenol and 1.5 grams of calcium oxide catalyst in the reactor equipped with condensing device, stirring device and gas disperser, when heating to 135 ° C while feeding nitrogen, add 10% of nonylphenol weight water, stirred for 1 hour. Then first normal pressure distilled water, then decompressed under 20 mm Hg vacuum, evaporated moisture at 140 DEG C for 20 minutes, cooled the solution to 80 DEG C, slowly added dropwise neutralizing catalyst theoretical acid amount 20 (weight )% concentrated sulfuric acid, heat the system temperature to 85-90°C, turn on the vacuum system, dehydrate under high vacuum for 1 hour, purge 3-4 times with nitrogen to remove the air in the system, and then adjust the reaction temperature of the system to Slowly inject 112 grams of ethylene oxide at 150°C for alkoxylation reaction; after the reaction, purge the system with nitrogen ...

Embodiment 2

[0040] Synthesis of Sodium Dodecylphenol Sulfonate Polyoxyethylene (10) Ether Sulfate

[0041] (1) Add 131 grams of dodecylphenol and 1.8 grams of calcium oxide catalyst to the reactor equipped with condensing device, stirring device and gas disperser. 10% by weight of phenol in water, stirred for 1 hour. Then first normal pressure distilled water, then decompressed under 20 mm Hg vacuum, evaporated moisture at 140 DEG C for 20 minutes, cooled the solution to 80 DEG C, slowly added dropwise neutralizing catalyst theoretical acid amount 20 (weight )% concentrated sulfuric acid, heat the system temperature to 85-90°C, turn on the vacuum system, dehydrate under high vacuum for 1 hour, purge 3-4 times with nitrogen to remove the air in the system, and then adjust the reaction temperature of the system to Slowly feed 222 grams of ethylene oxide at 150°C for alkoxylation reaction; after the reaction, purge the system with nitrogen to remove unreacted ethylene oxide, neutralize afte...

Embodiment 3

[0046] Synthesis of Triethanolamine Sulfate of Polyoxyethylene(10) Ether Octylphenol Sulfonate

[0047] (1) Add the calcium oxide catalyst of 98 gram octylphenols and 1.2 gram in the reactor that condensing unit, agitator and gas disperser are housed, when heating to 135 ℃ while logical nitrogen, add octylphenol weight 10% water, stirred for 1 hour. Then first normal pressure distilled water, then decompressed under 20 mm Hg vacuum, evaporated moisture at 140 DEG C for 20 minutes, cooled the solution to 80 DEG C, slowly added dropwise neutralizing catalyst theoretical acid amount 20 (weight )% concentrated sulfuric acid, heat the system temperature to 85-90°C, turn on the vacuum system, dehydrate under high vacuum for 1 hour, purge 3-4 times with nitrogen to remove the air in the system, and then adjust the reaction temperature of the system to Slowly inject 223 grams of ethylene oxide at 150°C for alkoxylation reaction; after the reaction, purge the system with nitrogen to r...

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Abstract

The invention relates to alkylphenol sulfonic polyoxyethylene aether sodium sulfovinate and the preparation method thereof, mainly aiming at solving the problems that current oil displacement agent containing surfactant is poor in oil displacement efficiency under high temperature with the existence of high salt and that the oil displacement agent contains alkali and causes damages to the stratum and the oil field and erodes the equipment and the pipes, which results in high production cost. The invention adopts alkylphenol sulfonic polyoxyethylene aether sodium sulfovinate with general molecular formula (I)to solve the problem; wherein M is alkali metal, ammonium group or amidocyanogen; R is alkyl from C1-C22; n is any integer from 1 to 30. The alkylphenol sulfonic polyoxyethylene aether sodium sulfovinate can be applied to the production of tertiary oil recovery in oil fields.

Description

technical field [0001] The invention relates to an alkylphenol sulfonic acid polyoxyethylene ether sulfate and a preparation method thereof. Background technique [0002] The main oilfields in my country have entered a period of high water cut after primary and secondary extraction, and crude oil production has declined year by year. In order to improve crude oil recovery and maximize the development of remaining reserves, tertiary oil recovery technology has played a very important role in ensuring stable and high production of oil fields . Among them, the ASP flooding (alkali-polymer-surfactant) technology using surfactant can greatly improve the oil displacement efficiency in the case of low surfactant dosage, so it has become economically and technically important. A very successful new technology for enhanced oil recovery. The main mechanism is: after the oil field enters the high water cut period, the remaining oil is trapped in the pores of the reservoir rock in a di...

Claims

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Application Information

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IPC IPC(8): C07C309/42C07C303/02C09K8/584
Inventor 陈荣福沙鸥张卫东
Owner CHINA PETROLEUM & CHEM CORP
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